Composition for producing glass



ll aitented Apr. ll, 3924i.

I l dis a3 a n diam ALEXANDER L. FJ'UVAL EABRIA'N, GE "EIAEFXIEE'GWON', 1L

1% Brewing.

To all whom it may concern.

Be it. known that I, ALEXANDER ll; Dov/u, nAonmN, a citizen of the Republic of France, residing at ll ashington, in the county of ll ashington and State of Penn sylvania, have invented certain new and useful li'l'lproven'ients in Compositions for Producing Glass, of'which the following is a specification.

My invention relates to a composition or batch for use in the production of glass.

I have discovered that particularly satisfactory results are obtained in the production of glass, it the natural double silicates of the alkali metals and the alkaline earth metals, such as, sodium and calcium, for we ample the mineral known as pectolite, are employed as constituents of the glass. It

has been found satisfactory to add a rela-' tively small amount by weight of the natu ral douhle silicates oi soduun and calcium to a batch of. the usual glass mixture, or areilatively small amount by Weight of such batch may he added to a relatively large amount. of natural double silicates of sodium and calcium. The following is an illustration of a composition for producing glass in accordance with my invention:

Lbs.

Sand 1.000

Soda ash 365 Limestone Q05 lcctolite or other natural double sili rates of Mfllllllll and calciunnhu -500 Lbs.

Natural double ilicates of sodium and calcium such as pectohte 1000 Sand i 200 Soda ash 70 all LimestoneMW- application filed hotelier 13, 1921.

Tlll'fSQ ingredients are ll'ieroughly mixed.

The ingredients of this second composition of coin e thoroughly mixed and heated to the tuning point, in accordance 5e Withlhe Well known heating methods.

The amount of natural doulile silicates of sodium and calcium to he added may be Widely varied, and will depend upon the nature of the glass desired, and the condition imder which the glass is to he Worked.

I have discovered that liy the use of these natural double silicates, that I can obtain a glass of a higher calriun'i content, than can he obtained by any other method now as known, and that the glass in which these double silicates are present has a relatively low melting point.

in the two illustrations of the llIVEHlJlOn, it Will he seen that the natural double silicc cates are cmnbined with the usual glass mix ture or hatch, and that the amount of the double silicates are widely varied.

it is to he ui'ulersiood that the forms of my invention herewith described, are to he taken as preferred emhodiments of my invention, and that various Lhanges may he resorted to in the proportions of the in gredicnts, and that chemical equivalents may he en'iployed, without departing from 7 the spirit of my invention or the scope of the suhjoined claims,

Having" thus descrihed my invention, I claim:

1 A composition for producing" glass, 30 comprising the constituents of the usual glass hatch, and the natural double silicate oi sodium and calcium known as pectolite.

[in composition for producing glass,

a. POIIQJPlSlDQ sand, soda ash, limestone, and 5 the natural double silicate ot sodium and calcium known as pectolite,

testimony whereof altii; my signa- ALEXANDEH it. DUVAL :lADlRlAN, 

